SRC/zlaset.f(3)

NAME
SRC/zlaset.f

SYNOPSIS

  Functions/Subroutines
subroutine zlaset (uplo, m, n, alpha, beta, a, lda)
ZLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

Function/Subroutine Documentation

  subroutine zlaset (character uplo, integer m, integer n, complex*16 alpha, complex*16 beta, complex*16, dimension( lda, * ) a, integer lda)

ZLASET initializes the off-diagonal elements and the diagonal elements of a matrix to given values.

Purpose:

    !>
    !> ZLASET initializes a 2-D array A to BETA on the diagonal and
    !> ALPHA on the offdiagonals.
    !>

Parameters
    UPLO

    !>          UPLO is CHARACTER*1
    !>          Specifies the part of the matrix A to be set.
    !>          = 'U':      Upper triangular part is set. The lower triangle
    !>                      is unchanged.
    !>          = 'L':      Lower triangular part is set. The upper triangle
    !>                      is unchanged.
    !>          Otherwise:  All of the matrix A is set.
    !>

    M

    !>          M is INTEGER
    !>          On entry, M specifies the number of rows of A.
    !>

    N

    !>          N is INTEGER
    !>          On entry, N specifies the number of columns of A.
    !>

    ALPHA

    !>          ALPHA is COMPLEX*16
    !>          All the offdiagonal array elements are set to ALPHA.
    !>

    BETA

    !>          BETA is COMPLEX*16
    !>          All the diagonal array elements are set to BETA.
    !>

    A

    !>          A is COMPLEX*16 array, dimension (LDA,N)
    !>          On entry, the m by n matrix A.
    !>          On exit, A(i,j) = ALPHA, 1 <= i <= m, 1 <= j <= n, i.ne.j;
    !>                   A(i,i) = BETA , 1 <= i <= min(m,n)
    !>

    LDA

    !>          LDA is INTEGER
    !>          The leading dimension of the array A.  LDA >= max(1,M).
    !>

Author
    Univ. of Tennessee

    Univ. of California Berkeley

    Univ. of Colorado Denver

    NAG Ltd.

Definition at line 105 of file zlaset.f.

Author

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